Told after practice that his head coach defended him against his media critics earlier in the day, Jenkins’ response was, in effect, bring it on.

“I love criticism,” Jenkins said. “That’s what drives me. It’s no hard feelings. People are going to have what they’ve got to say … It doesn’t really matter about the outside world and what they say about me. If I thought about their comments so heavily then I wouldn’t be where I’m at now. So I’m going to keep on going.”

Jenkins seems to accept his spot in the pecking order and noted that he was in a similar situation in college. Before his 90-catch, 1,276-yard senior season at Illinois, Jenkins nearly transferred after he had 10 catches for 123 yards as a sophomore.

“(I’m) a very patient guy, man,” Jenkins said. “I was like that in college … I wasn’t a starter right away. It’s like college here. I have to wait my turn with guys like Moss and Crabtree, Manningham, and the proven vets like that. What do you expect? You know what I’m saying? You have to wait your turn, so it’s all good.”

* Michael Crabtree appeared in shorts, a jersey and backwards baseball cap late in practice. Crabtree, who wasn’t walking with a noticeable limp, had black tape on the back of his right calf.

* Wide receiver Brian Tyms was told to leave practice by Jim Harbaugh after the undrafted rookie flung safety Trenton Robinson to the ground during a special-teams drill. After practice, Tyms emerged from the locker room and spoke with Harbaugh for about five minutes.

Before practice, Harbaugh addressed the issue of tempers possibly flaring during the first padded session of training camp.

“We want no fights,” Harbaugh said. “When guys are punching other guys in the helmet, why would we want that? That’s not going to help us win games. We’ll be proactive with that and when tempers flare, you handle it.”

* Linebacker Tarvares Gooden did not practice. Gooden left practice early Saturday with an apparent illness. … Wide receiver Joe Hastings suffered an apparent hip injury during practice and remained on the sideline. … Wide receiver Kyle Williams had his legs stretched by a trainer late in practice. Williams appeared to walk off the practice field a bit gingerly.